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Milk Drop Photos 

  These photos were taken using a simple trigger and delay circuit based on a 555 timer IC. Using a laser pointer and a photodiode as the trigger, the delay circuit was calibrated to activate the flash at the precise moment when the splash was forming. The process of calibrating the delay circuit is a simple process of turning out the light, and letting the milk drip, while adjusting the delay with a potentiometer. Each time a drop passes through the laser beam, the flash is activated, and you can actually see the position of the drop. Because the surroundings are dark, and the impulse of light produced by the flash is so short, you actually see a frozen image of what your photo will look like. It's easy, then to adjust the delay to get the picture you're looking for.
 

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 milk9.jpg (13012 bytes)  milk13.jpg (14517 bytes)  milk10.jpg (15968 bytes)  milk14.jpg (19246 bytes) milk11.jpg (13568 bytes)  milk12.jpg (15355 bytes)  milk2.jpg (8790 bytes)  milk8.jpg (10447 bytes) milk7.jpg (9785 bytes)  milk1.jpg (8408 bytes)  milk3.jpg (7601 bytes)  milk4.jpg (8352 bytes) milk5.jpg (6896 bytes)  milk6.jpg (6791 bytes)            

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